<template>
    <div class="scholarship-applications-container">
      <div class="header">
        <div class="left">
          <h2>奖学金申请管理</h2>
        </div>
        <div class="right">
          <!-- 搜索框 -->
          <el-input
            v-model="searchQuery"
            placeholder="搜索申请人/项目名称"
            style="width: 220px"
            clearable
            @clear="handleSearch"
            @keyup.enter="handleSearch"
          >
            <template #prefix>
              <el-icon><Search /></el-icon>
            </template>
          </el-input>
          <!-- 状态筛选 -->
          <el-select 
            v-model="statusFilter" 
            placeholder="状态筛选" 
            clearable 
            style="width: 120px"
            @change="handleStatusChange"
          >
            <el-option label="待审核" value="PENDING">
              <el-tag>待审核</el-tag>
            </el-option>
            <el-option label="已通过" value="APPROVED">
              <el-tag type="success">已通过</el-tag>
            </el-option>
            <el-option label="已拒绝" value="REJECTED">
              <el-tag type="danger">已拒绝</el-tag>
            </el-option>
          </el-select>
        </div>
      </div>
  
      <el-card class="table-card">
        <el-table
          v-loading="loading"
          :data="applications"
          border
          stripe
          style="width: 100%"
        >
          <el-table-column prop="id" label="ID" width="80" />
          <el-table-column label="申请项目" min-width="150">
            <template #default="{ row }">
              {{ row.scholarship.title }}
            </template>
          </el-table-column>
          <el-table-column label="申请学生" min-width="120">
            <template #default="{ row }">
              {{ row.student.name }}
            </template>
          </el-table-column>
          <el-table-column prop="reason" label="申请理由" min-width="200" show-overflow-tooltip />
          <el-table-column prop="attachmentUrl" label="附件" width="100">
            <template #default="{ row }">
              <el-link v-if="row.attachmentUrl" type="primary" :href="row.attachmentUrl" target="_blank">
                查看
              </el-link>
              <span v-else>无</span>
            </template>
          </el-table-column>
          <el-table-column prop="status" label="状态" width="100">
            <template #default="{ row }">
              <el-tag :type="getStatusType(row.status)">
                {{ getStatusText(row.status) }}
              </el-tag>
            </template>
          </el-table-column>
          <el-table-column label="申请时间" width="180">
            <template #default="{ row }">
              {{ formatDate(row.createTime) }}
            </template>
          </el-table-column>
          <el-table-column label="操作" width="120" fixed="right">
            <template #default="{ row }">
              <el-button
                v-if="row.status === 'PENDING'"
                type="primary"
                size="small"
                @click="handleReview(row)"
              >
                审核
              </el-button>
            </template>
          </el-table-column>
        </el-table>
  
        <div class="pagination">
          <el-pagination
            v-model:current-page="currentPage"
            v-model:page-size="pageSize"
            :total="total"
            :page-sizes="[10, 20, 50]"
            layout="total, sizes, prev, pager, next"
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
          />
        </div>
      </el-card>
  
      <!-- 审核对话框 -->
      <el-dialog
        title="申请审核"
        v-model="dialogVisible"
        width="500px"
      >
        <el-form
          ref="formRef"
          :model="form"
          :rules="rules"
          label-width="100px"
        >
          <el-form-item label="审核结果" prop="approved">
            <el-radio-group v-model="form.approved">
              <el-radio :label="true">通过</el-radio>
              <el-radio :label="false">拒绝</el-radio>
            </el-radio-group>
          </el-form-item>
          <el-form-item label="审核意见" prop="reviewComments">
            <el-input
              v-model="form.reviewComments"
              type="textarea"
              :rows="3"
              placeholder="请输入审核意见"
            />
          </el-form-item>
        </el-form>
        <template #footer>
          <el-button @click="dialogVisible = false">取消</el-button>
          <el-button
            type="primary"
            :loading="submitting"
            @click="handleSubmit"
          >
            确定
          </el-button>
        </template>
      </el-dialog>
    </div>
  </template>
  
  <script setup>
  import { ref, onMounted } from 'vue'
  import { ElMessage } from 'element-plus'
  import { Search } from '@element-plus/icons-vue'
  import { getApplications, reviewApplication } from '@/api/admin/scholarshipApplication'
  import { formatDate } from '@/utils/format'
  
  // 表格数据
  const loading = ref(false)
  const applications = ref([])
  const total = ref(0)
  const currentPage = ref(1)
  const pageSize = ref(10)
  const statusFilter = ref('')
  
  // 添加搜索查询参数
  const searchQuery = ref('')
  
  // 获取申请列表
  const fetchApplications = async () => {
    try {
      loading.value = true
      const response = await getApplications({
        page: currentPage.value - 1,
        size: pageSize.value,
        status: statusFilter.value,
        search: searchQuery.value
      })
      
      if (response) {
        applications.value = response.content
        total.value = response.totalElements
      }
    } catch (error) {
      console.error('Failed to fetch applications:', error)
      ElMessage.error('获取申请列表失败')
    } finally {
      loading.value = false
    }
  }
  
  // 状态相关
  const getStatusType = (status) => {
    switch (status) {
      case 'PENDING': return ''
      case 'APPROVED': return 'success'
      case 'REJECTED': return 'danger'
      default: return 'info'
    }
  }
  
  const getStatusText = (status) => {
    switch (status) {
      case 'PENDING': return '待审核'
      case 'APPROVED': return '已通过'
      case 'REJECTED': return '已拒绝'
      default: return '未知'
    }
  }
  
  // 处理状态筛选
  const handleStatusChange = () => {
    currentPage.value = 1
    fetchApplications()
  }
  
  // 处理分页
  const handleSizeChange = (val) => {
    pageSize.value = val
    fetchApplications()
  }
  
  const handleCurrentChange = (val) => {
    currentPage.value = val
    fetchApplications()
  }
  
  // 审核相关
  const dialogVisible = ref(false)
  const formRef = ref(null)
  const submitting = ref(false)
  const currentId = ref(null)
  
  const form = ref({
    approved: null,
    reviewComments: ''
  })
  
  const rules = {
    approved: [
      { required: true, message: '请选择审核结果', trigger: 'change' }
    ],
    reviewComments: [
      { required: true, message: '请输入审核意见', trigger: 'blur' }
    ]
  }
  
  const handleReview = (row) => {
    currentId.value = row.id
    form.value = {
      approved: null,
      reviewComments: ''
    }
    dialogVisible.value = true
  }
  
  const handleSubmit = async () => {
    if (!formRef.value) return
    
    try {
      await formRef.value.validate()
      submitting.value = true
      
      await reviewApplication(currentId.value, form.value)
      ElMessage.success('审核成功')
      dialogVisible.value = false
      fetchApplications()
    } catch (error) {
      console.error('Review failed:', error)
      ElMessage.error(error.response?.data || '审核失败')
    } finally {
      submitting.value = false
    }
  }
  
  // 添加搜索处理函数
  const handleSearch = () => {
    currentPage.value = 1
    fetchApplications()
  }
  
  // 在组件挂载时获取数据
  onMounted(() => {
    fetchApplications()
  })
  </script>
  
  <style scoped>
  .scholarship-applications-container {
    padding: 20px;
  }
  
  .header {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #fff;
    padding: 16px 20px;
    border-radius: 4px;
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
  }
  
  .left {
    display: flex;
    align-items: center;
    gap: 16px;

    h2 {
      margin: 0;
      font-size: 18px;
      font-weight: 600;
      color: #303133;
    }
  }
  
  .right {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  
  .table-card {
    margin-bottom: 20px;
    background-color: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
  }
  
  .pagination {
    margin-top: 20px;
    padding: 16px 20px;
    display: flex;
    justify-content: flex-end;
    background-color: #fff;
    border-top: 1px solid #ebeef5;
  }
  
  /* 添加状态标签样式 */
  .el-tag {
    margin: 0;
    text-align: center;
    width: 100%;
  }
  
  /* 调整表格内容垂直对齐 */
  :deep(.el-table .cell) {
    display: flex;
    align-items: center;
  }
  
  /* 优化按钮样式 */
  :deep(.el-button--small) {
    padding: 8px 16px;
  }
  </style> 